This browser does not support the video element.
In twin screw extrusion, screw design must be optimized according to material behavior and process objectives. The selection and arrangement of screw elements directly affect material flow, shear intensity, residence time, and reaction efficiency.
Key design parameters such as L/D ratio and D/d ratio define the overall processing window. Proper configuration allows sufficient kneading and mixing while avoiding excessive energy consumption or thermal degradation.
ZHITIAN develops screw element solutions by analyzing real processing conditions rather than relying on standard configurations, ensuring stable long-term operation.
| Item | Description |
|---|---|
| Screw Type | Co-rotating twin screw |
| Design Concept | Material- and process-oriented optimization |
| Key Parameters | L/D ratio, D/d ratio, pitch, channel depth |
| Function Types | Conveying, kneading, mixing, reaction |
| Materials | Tool steel, PM-HIP alloys, corrosion-resistant alloys |
| Heat Treatment | Optimized for wear and structural stability |
| Customization | Available based on material and process needs |
Screw elements are selected based on viscosity, filling level, abrasiveness, and thermal sensitivity of the material, ensuring predictable processing behavior.
Optimized ratios improve kneading and reaction efficiency while controlling residence time and reducing unnecessary power consumption.
Element features such as pitch, channel depth, and flight geometry are adjusted to control shear forces and material distribution.
Different conveying, kneading, and mixing elements can be combined to meet specific processing goals rather than using generic layouts.
Design principles are refined through long-term operating data, ensuring consistency between theoretical design and actual production results.
These optimized screw elements are widely used in:
Polymer compounding and modification
Reactive extrusion processes
Masterbatch production
Chemical and functional material processing
Food and feed extrusion applications
They are suitable for both pilot-scale development and continuous industrial production lines.
Selection should be based on material flow behavior, shear sensitivity, and required residence time rather than machine size alone.
A properly designed L/D ratio improves mixing and reaction efficiency while avoiding excessive energy consumption or thermal damage.
They directly influence material conveying speed, shear intensity, and residence time, which determine product quality.
Yes. Optimized configurations allow stable output with balanced energy usage and processing time.
ZHITIAN specializes in the development and manufacturing of twin screw extruder components. Through material research, configuration optimization, and long-term application experience, ZHITIAN provides reliable screw element solutions that support consistent product quality and efficient production.